Plants take in carbon dioxide as a part of photosynthesis. Their waste product is oxygen and so it continues. I can't help with the water cycle though... sorry. I hoped this helped :p
Explanation:
Hope this helps with your question
The circulatory helps keep you healthy because it delivers nutrients and oxygen to all of your cells(which your cells need)(and you need cells to survive).
The circulatory assists your cells and gives them what they need to stay healthy and keep you alive
Hiya
I don't see how this is a question, can you please elaborate a bit? Thanks!
